海绵钛、钛及钛合金化学分析方法 第22部分:铌量的测定 5-Br-PADAP分光光度法和电感耦合等离子体原子发射光谱法
Methods for chemical analysis of titanium sponge,titanium and titanium alloys—Part 22:Determination of niobium content—5-Br-PADAP spectrophotometry and inductively coupled plasma atomic emission spectrometry